body,.nav_twoLevel{
	min-width:980px;
}
/* nav样式开始 */
nav{
	width:100%;
	height:70px;
	background-color: #3d4144;
	position:fixed;
	top:0;
	z-index:1000000;
	.nav_firstLevel{
		height:70px;
		border-bottom:3px solid #f7a501;
		.logo{
			float:left; 
			margin-top:9px;
			margin-left:10%;
		}
		.nav_list{
			margin-right:130px;
			height:70px;
			float:right;
			// overflow:hidden;
			>div{
				float:left;
				position:relative;
				>a{
					float:left;
					width:150px;
					height:70px;
					text-align:center;
					font:16px/70px "Microsoft Yahei";
					border-bottom: 3px solid #f7a501;
					&.current{
						background:#141414 url(../images/triangle.png) no-repeat center bottom;
						background-size: 15px;
						color:#f7a501;
						margin:0;
						padding:0;
					}	
					&:hover{
						background-color:#141414;
						color:#f7a501;
						margin:0;
						padding:0;
					}
				}
				ul{
					height:70px;
					float:right;
					display: none;
					position: absolute;
					top:71px;
					left:-40px;
					li{
						display: inline-block;
						a{
							display: inline-block;
							width:155px;
							height:70px;
							text-align:center;
							padding-top:48px;
							color:#b7b7b7;
							font:700 14px "Microsoft Yahei";
							// transform:translateX(5px);
						}
					}
					&.product_intro {
						width:320px;
						margin-right:330px;
						left:-75px;
						li{
							&:first-of-type{
								a{
									background:url(../images/VR_dev_0.png)  no-repeat center 3px;
									&:hover,&.current{
										background:url(../images/VR_dev_1.png)  no-repeat center 3px;
										color:#000;
									}
								}
							}
							&:last-of-type{
								background:url(../images/VR_con_0.png)  no-repeat center 3px;
								a{
									&:hover,&.current{
										background:url(../images/VR_con_1.png)  no-repeat center 3px;
										color:#000;
									}
								}
							}
						}
					}
					&.solution {
						width:480px;
						margin-right:140px;
						left:-160px;
						li{
							&:nth-of-type(1){
								a{
									background:url(../images/VR+_0.png)  no-repeat center 3px;
									&:hover,&.current,{
										background:url(../images/VR+_1.png)  no-repeat center 3px;
										color:#000;
									}
								}
							}
							&:nth-of-type(2){
								a{
									background:url(../images/VR_LAB_0.png)  no-repeat center 3px;
									&:hover,&.current{
										background:url(../images/VR_LAB_1.png)  no-repeat center 3px;
										color:#000;
									}
								}
							}
							&:nth-of-type(3){
								a{
									background:url(../images/VR_show_0.png)  no-repeat center 3px;
									&:hover,&.current{
										background:url(../images/VR_show_1.png)  no-repeat center 3px;
										color:#000;
									}
								}
							}
						}
					}
					&.aboutUs {
						width:320px;
						margin-right:130px;	
						left:-81px;
						li{
							&:first-of-type{
								a{
									background:url(../images/aboutUs_0.png)  no-repeat center 3px;
									&:hover,&.current{
										background:url(../images/aboutUs_1.png)  no-repeat center 3px;
										color:#000;
									}
								}
							}
							&:last-of-type{
								a{
									background:url(../images/joinUs_0.png)  no-repeat center 3px;
									&:hover,&.current{
										background:url(../images/joinUs_1.png)  no-repeat center 3px;
										color:#000;
									}
								}
							}
						}
					}
				}
			}
		}
	}	
	.nav_twoLevel{	
		// width:100%;
		height:75px;
		background-color:#EFEFEF;
		display: none;
		
	}
}
/* nav样式结束 */
/* 底部样式开始 */
footer{
	width:100%;
	height:200px;
	background:#5A5A5A;
	color:#fff;
	position:relative;
	h3{
		font:900 30px/30px "Microsoft Yahei";
		position:absolute;
		top:20px;
		left:50%;
		transform:translateX(-50%);
	}
	.left,.right{
		position:absolute;
		top:70px;
		left:50%;
		h4{
			font:400 18px/25px "Microsoft Yahei";
		}
		a,p{
			font:14px/16px "Microsoft Yahei";
			display: block;
			padding-top:10px;
		}
	}
	.left{
		transform:translateX(-290px);
	}
	.right{
		transform:translateX(170px);
	}
}
/* 底部样式结束 */